不同CaCO_(3)填充三元乙丙橡胶复合材料填料间及填料与橡胶间的相互作用  

Filler-filler and filler-rubber interaction of different CaCO_(3)-filled ethylene propylene diene monomer rubber composites

作　　者：毕薇娜 赵树高[1] Bi Weina;Zhao Shugao(School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao Shandong 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《石油化工》2022年第12期1421-1425,共5页Petrochemical Technology

摘　　要：选用未改性的CaCO_(3)与经硬脂酸改性的CaCO_(3)两种填料制备三元乙丙橡胶(EPDM)/CaCO_(3)复合材料。对填料的粒径、填料在EPDM/CaCO_(3)复合材料中的分散性、填料与橡胶基体生成结合胶的情况、EPDM/CaCO_(3)复合材料硫化胶的动态性能和力学性能进行了研究。实验结果表明,经硬脂酸改性后CaCO_(3)的粒径变大,降低了填料的聚集性,生成的结合胶含量减少,且改性后的CaCO_(3)分子与橡胶大分子链间的相互作用不明显;经硬脂酸改性的CaCO_(3)填充的EPDM/CaCO_(3)复合材料硫化胶的力学性能下降。Ethylene propylene diene monomer rubber(EPDM)/CaCO_(3)composites were prepared using the unmodified and stearic acid modified CaCO_(3)fillers. The particle size of filler,dispersion of filler in EPDM/CaCO_(3)composites,generation of bound rubber from filler and rubber matrix,and dynamic and mechanical properties of vulcanized EPDM/CaCO_(3)composites were studied. The experimental results show that the particle size of stearic acid modified CaCO_(3)filler becomes larger,which reduced the aggregation of filler,the content of bound rubber decrease and the interaction between the modified CaCO_(3)molecule and the rubber macromolecular chain is not obvious. Mechanical properties of vulcanized EPDM/CaCO_(3)composites filled with CaCO_(3)modified by stearic acid decrease.

关 键 词：碳酸钙 三元乙丙橡胶 相互作用 改性 

分 类 号：TQ330.1[化学工程—橡胶工业]